Question

A contractor undertakes to dig a canal which is 12 km long in 30 days and employed 80 men. He finds that after
10 days of working, 3 km of canal have been completed. How many men must now be employed to finish the work on time
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Answer 1

Answer:

Total time given =35 days.

To dig a canal of 2 km in 20 days, 90 men were required.

So, to dig a canal of 1 km in 1 day, 290×20 men will be required.

So, to dig a canal of 4 km in 15 days 15900×4 =240 men will be required.

As 90 men were already employed, so 150 more men are required.

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